Apparatus for raising or lowering ships&#39; boats &amp; c.



No. 680,823. Patented Aug. 20, IBM.

I A. WELIIM. APPARATUS FOR RAISING 0B LOWERING SHIPS BOATS, 8L0.

(Application filed May 27,1901.

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No. 680,823. Patented Aug. 20, [90L A. WELIN. APPARATUS FOR RAISING 0BLOWEBIMG SHIPS BOATS. 6w.

(Applicatiqn filed May 27, 1901 3 Sheets-Sheet :2.

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No. 680,823. Patented Aug. 20, IQOII.

A. WELIM. v APPARATUS FUR RAISING 0R LOWERING SHIPS BOATS, 81.0.

(Application filed May 27, 1901.)

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AXEL VVELIN, OF LONDON, ENGLAND.

APPARATUS FOR RAISING 0R LOWERING SHIPS EQATQ- SPECIFICATION formingpart of Letters Patent No. 680,823, dated August 20, 1901.. Applicationfiled May 2'7, 1901. Serial No. 62,103. (No model.)

T0 on whom it may concern:

Be it known that I, AXEL WVELIN, engineer, a subject of the King ofSweden and Norway, residing at 24 and 25 Fenchurch street, in the cityof London, England, have invented certain new and useful Improvements inApparatus for Raising or Lowering Ships Boats, of which the following isa specification.

According to this invention the davit turns about a center moving alongguides, and its lower end is in the form of a toothed quadrant,preferably circular, rolling on a rack. The weight of the boat and itscontents tend to make the quadrants roll on the racks, inclining thedavits more and more and at the same time moving them outward. Eachdavit carries a pawl engaging with a rack in order to prevent the davitsfrom being brought back by the rolling of the ship, or the motion of thedavit may be controlled by a screw or other means. If the davits arecurved and inboard of the boat, they need not be at the ends of theboat.

Figures 1 and 2 are side elevations of davits constructed according tothis invention. Fig. 3 is an elevation, and Fig. 4 a plan, of the checksemployed.

a is the davit, carrying a pin Z), running between guides c.

In Fig. 1 the pin b Works in a block cZ, sliding between the guides,while in Fig. 2 the pin 1) is in the form of a roller running betweenthe guides.

e is a toothed quadrant forming the lower part of the davit, and f is arack on whichit rolls.

In Fig. 1 the motion is controlled by the screw g, working in a nutformed in a lug on the block d, while in Fig. 2 the outward motion iscontrolled by the rope h, and the davit is prevented from being swungback by the rolling of the ship by the pawl 70, which gears with therack Z.

The chock m is fixed and supports one end of the chock n, whose otherend is supported by the link 0. The chock n is secured in position bythe lever-catch 19. To lower the boat, the lever-catch p is raised outof the hook q, and then as the boat moves outward it pushes the chock nwith it into the position shown in dotted lines in Fig. 3.

In cases Where the apparatus may be in danger of getting covered by icea hole is bored lengthwise through the body of the rack and connectedwith a steam-pipe. By

this means the ice is melted and the gear kept in working order.

I/Vhat I claim is- 1. The combination of a davit, a pivot about whichthe davit can turn, guides for the pivot, a toothed segment at the lowerend of the davit, and a rack on which the segment can roll.

2. The combination of adavit, a pivot about which the davit can turn,guides for the pivot, means for controlling the movement of the pivot inthe guides, a toothed segment at the lower end of the davit, and a rackon which the segment can roll.

3. The combination of a davit, a pivot about which the davit can turn, ablock carrying the pivot, guides for the block, a nut fixed to theblock, a screw working in the nut, a toothed segment at the lower end ofthe davit, and a rack on which the segment can roll.

4:. The combination of a davit, means for moving the top of the davitoutward, a stationary chock, a second chock supported at one end by thefirst, and links supporting the other end of the second chock.

5. The combination of a davit, a pivot about which the davit can turn,guides for the pivot, a toothed segment at the lower end of the davit, arack on which the segment can roll, a stationary chock, a second chocksupported at one end by the first, and links supporting the other end ofthe second chock.

6. The combination of a davit, a pivot about which the davit can turn,guides for the pivot, means for controlling the movement of the pivot inthe guides, a toothed segment at the lower end of the davit, a rack onwhich the segment can roll, a stationary chock, a second chock supportedat one end by the first, and 5 links supporting the other end of thesecond chock.

7. The combination of a davit, a pivot about which the davit can turn, ablock carrying the pivot, guides for the block, a nut fixed to theblock, a screw working in the nut, a toothed segment at the lower end of'the davit, a rack on which the segment can roll, a stationary chock, asecond chock supported at one end by the first, and links supporting theother end of the second chock.

AXEL WELIN. Witnesses:

R. B. RANSFORD, J. H. WI-IITEHEAD.

